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R
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m
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0
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(B)
0
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m
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(C)
0
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2
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10cm
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搴?/p>
蠅
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OC
鏃嬭浆锛屽凡鐭ユ斁鍦ㄧ鍐呰〃闈笂鐨勪竴涓皬鐞?/p>
P
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鍏朵綅缃珮浜庣搴?/p>
4cm
锛屽垯鐢辨鍙帹鐭ョ鏃嬭浆鐨勮閫熷害绾︿负
(A)13rad/s
(B)17rad/s
(C)10rad/s
(D)18rad/s
(a)
(b)
棰?/p>
3.1
锛?/p>
2
锛夊浘
[
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(A)]
(3)
濡?/p>
3.1(3)
鍥炬墍绀猴紝鏈変竴灏忓潡鐗╀綋锛岀疆浜庡厜婊戠殑姘村钩妗岄潰涓婏紝鏈変竴缁冲叾涓�绔繛
缁撴鐗╀綋锛?/p>
锛涘彟涓�绔┛杩囨闈㈢殑灏忓瓟锛岃鐗╀綋鍘熶互瑙掗�熷害
飦?/p>
鍦ㄨ窛瀛斾负
R
鐨勫渾鍛?/p>
涓婅浆鍔紝浠婂皢缁充粠灏忓瓟缂撴參寰�涓嬫媺锛屽垯鐗╀綋
锛?/p>
A
锛夊姩鑳戒笉鍙橈紝鍔ㄩ噺鏀瑰彉銆?/p>
锛?/p>
B
锛夊姩閲忎笉鍙橈紝鍔ㄨ兘鏀瑰彉銆?/p>
锛?/p>
C
锛夎鍔ㄩ噺涓嶅彉锛屽姩閲忎笉鍙樸�?/p>
锛?/p>
D
锛夎鍔ㄩ噺鏀瑰彉锛屽姩閲忔敼鍙樸�?/p>
锛?/p>
E
锛夎鍔ㄩ噺涓嶅彉锛屽姩鑳姐�佸姩閲忛兘鏀瑰彉銆?/p>
[
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(E)]
3.2
濉┖棰?/p>
(1)
鍗婂緞涓?/p>
30cm
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0.5rad路
s
-2
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涓�
鐐?/p>
鍦?/p>
椋?/p>
杞?/p>
杞?/p>
杩?/p>
240
藲
鏃?/p>
鐨?/p>
鍒?/p>
鍚?/p>
鍔?/p>
閫?/p>
搴?/p>
a
蟿
=
锛?/p>
娉?/p>
鍚?/p>
鍔?/p>
閫?/p>
搴?